Latest evolution of the FlexCore includes sizes up to 7,000, 8,000 and 9,000 MBH.

HO2T continuously monitors the oxygen level of the flue gas in the vent piping.

Mechanical method to achieve higher turndown eliminates need to add excess air.

Residential NRCB unit expands Noritz’s line of combination boilers with enhanced heating capabilities, durable 316L stainless steel heat exchangers, and other installer- and user-friendly features.

The 10:1 turndown ratio, 95 percent AFUE, flexibility of venting and remote access via mobile applications are just few of many features.

Available in seven sizes from 500 to 2000 MBH, natural or LP gas, 85 percent thermal efficiency, up to 4:1 stage firing, and qualify as low NOx emission.